# Creating an all C based MacOS application using CUI library

- Page: https://shared.btbytes.com/p/macos-app-with-cui
- Date: 2026-11-11
- Tags: c, macos-app, component-library

[CUI](https://yappologistic.github.io/CUI/), a native component libraray for C was announced only couple days ago, and it appears to have been "vibe coded" (which is fine, btw). The screenshot gallery looked very impressive and the demo widgets very responsive. 

I wondered if I can use this *today* to make a new app, and I set out to do so. I tried creating a screenshotting app in the likes of [Shottr](https://shottr.cc). The biggest complaint I have with Shottr is that it does not support Multiple Upload backends. And this is my first goal. 

The first cut is looking good.  What you see below is the screenshot of my desktop being edited inside the "shotput" app I am developing. You can see the rectangle, oval, and blur tools in action.

![image.png](https://shared.btbytes.com/2026/img-0008.png)


----

The other library in similar vein is [Exact](https://github.com/expo/exact) a Rust library with seemingly much larger appetite.